VDW Warm up Issues

Question

Hi,
I have a page with an embedded VDW that takes 30 seconds to load during periods of inactivity. To try to get around this I created a warmup script which I have runnig as a scheduled task every 5 minutes however it doesn't make a difference to performance (see
script below). When I run interactively (set $visible to true,and run from powershell_ISE) I can see the page opening and closing but still I haven't confirmed if this rectifies my performance issues .
I'm finding it very difficult to test because each time I log in and the page loads I have to wait what seems like around 25 minutes to replicate the issue (i.e. service stops, or something goes out of memory).
Perhaps this be related to IIS app pool properties?
$oIE=new-object -com internetexplorer.application
# visibility can be set to false so we don't see the actual browser window
$oIE.visible=$False;
# wait till browser is loaded
while ($oIE.busy) {
sleep -milliseconds 50
# request new url
$oIE.navigate2("http://blahblah/default.aspx") ;
# wait till url is loaded
while ($oIE.busy) {
sleep -milliseconds 50
$doc = $oIE.Document;
$doc.readyState;
# Close browser
$oIE.Quit();

Answer 1

Here is hiw the issue was resolved
http://support.microsoft.com/kb/2672574/EN-US
Please apply the workaround 2 in the KB article to disable the automatic update of root certificates on the SharePoint Servers
Steps:
Under the
Computer Configuration node in the Local Group PolicyEditor, double-click
Policies
Double-click
Windows Settings, double-click Security Settings, and then double-click
Public Key Policies
In the
details pane, double-click Certificate Path Validation Settings
Click the
Network Retrieval tab, click to select the Define these policy settings check box, and then click to clear the
Automatically update certificates in the Microsoft Root Certificate Program (recommended) check box
Click
OK, and then close the Local Group Policy Editor
Run
gpupdate /force for the policy to take effect immediately